Rose plant Jactutti

ABSTRACT

Minature rose with yellow-orange blossom petals having red stripes which spread as blossom ages. Plant is resistant to rust and powdery mildew. Rose is cross of variety AROgobi with the variety MORprints.

The present invention relates to a new and distinct variety of roseplant of the miniature class which was originated by me by crossing thevariety AROgobi, U.S. Plant Pat. No. 5,702, with the variety MORprints.

The primary objective of this breeding was to produce a new rose varietyhaving the gold yellow colour and dark green foliage of the varietyAROgobi combined with the compact habit and flower striping of thevariety MORpints. The objective was substantially achieved along withother desirable improvements as evidenced by the following uniquecombination of characteristics which are outstanding in the new varietyand which distinguish it from its parents, as well as from all othervarieties of which I am aware:

1. Unusual striping in the flower and a gradual spread of the red colorin the flower as it ages.

2. Resistance to powdery mildew and rust

3. Dark green glossy foliage

4. Upright but dwarf habit of growth

5. Abundance of glands on stipules, sepals, peduncle and petiole.

Asexual reproduction of this new variety by budding and by softwoodcuttings, as performed at Wasco and Somis, Calif., shows that theforegoing characteristics and distinctions come true to form and areestablished and transmitted through succeeding propagations.

The accompanying photograph shows typical specimens of the vegetativegrowth and flowers of this new variety in different stages ofdevelopment, depicted in color as nearly true as it is reasonablypossible to make the same in a color illustration of this character.

The following is a detailed description of my new rose cultivar withcolor descriptions using terminology in accordance with The RoyalHorticultural Society (London) Colour Chart, except where ordinarydictionary significance of color is indicated.

Parentage:

Seed parent.--AROgobi.

Pollen parent.--MORpints.

Classification:

Botanical.--Rosa hybrida.

Commercial.--Miniature.

FLOWER

Observations made from specimens grown in a garden in Somis, Calif.,Apr.-Jun. of 1991.

Blooming habit: Continuous.

Bud:

Size.--3/4 inch when the petals start to unfurl.

Form.--Short, pointed ovoid to globular.

Color.--When sepals first divide, bud color is Yellow-Orange Group 15Bwith the petals tipped in Red Group 46B. When half blown, the uppersides of the petals are Yellow-Orange Group 15B with petal edges andstripes in Red Group 40D; and the lower sides of the petals areYellow-Orange Group 15B with the outside petals tipped in Red Group 46B.

Sepals.--Color: Green Group 137D. Surface texture: Covered in finehairs. There are three lightly appendaged sepals that are edged withglands. There are two unappendaged sepals with hairy edges.

Receptacle.--Color: Green Group 137D. Shape: Funnel. Size: 1/4"×1/4".Surface: Hairy.

Peduncle.--Length: Short, one inch. Surface: Glandular. Color: Mediumgreen. Strength: Stiff, erect, slender.

Bloom:

Size.--Small. Average open size is 11/2 inches.

Borne.--Several together, in flat clusters.

Stems.--Short, strong, 6".

Form.--When first open: High centered. Permanence: Flattens.

Petalage.--Number of petals under normal conditions: 25-30.

Color.--The upper side of the petals is Yellor-Orange Group 15B withpetal edges and stripes in Red Group 40D. The reverse side of the petalsis Yellow-Orange Group 15B with the outside row of petals tipped in RedGroup 46B. The color of the base of petals is Yellow-Orange Group 15B.The major color on the upper side is Yellow-Orange Group 15B.

Variegations.--No variegations except the striping.

Discoloration.--The general tonality at the end of the first day: Nochange. At the end of the third day, a gradual intensification andspread of the red coloration as the flower ages. The striping is mostevident in cool sunny weather. In hot weather, the striping can bemasked by the rapid change in color from bright yellow to red.

Fragrance.--Slight.

Petals:

Texture.--Medium.

Shape.--Deltoid.

Form.--Tips slightly recurved, edges slightly quilled.

Arrangements.--Imbricated, with no petaloids in the center.

Persistence.--Drop off cleanly.

Lastingness.--On the plant: short, 3-4 days. As a cut flower: short, 4days.

Reproductive parts:

Anthers.--Size: Medium. Quantity: Many. Color: Yellow. Arrangement:Regular around styles.

Filaments.--Color: Yellow.

Pollen.--Color: Gold-yellow.

Styles.--Color: White.

Stigmas.--Color: Greenish-white.

Form: Bush.

Growth: Vigorous; dwarf; upright; branching.

Foliage:

Number of leaflets on normal mid-stem leaves.--or 7.

Size.--Small, 31/2" long×2" wide.

Quantity.--Abundant.

Color.--New foliage: dark green with a reddish cast. Old foliage: darkgreen and glossy.

Leaflets:

Shape.--Pointed oval.

Texture.--Upper side: Leathery, glossy.

Edge.--Serrated.

Serration.--Single.

Petiole rachis.--Color: Reddish, becoming green as the leaf ages.

Petiole underside.--Rough with prickles and glands.

Stipules.--Medium, 1/2"; bearded and lower surface covered in glands.

Disease resistance.--Resistant to rust and mildew under normal growingconditions at Somis, Calif.

Wood:

New wood.--Color: Reddish. Bark: Smooth.

Old wood.--Color: Green. Bark: Smooth.

Prickles:

Quantity.--On main canes from base: ordinary. On laterals from maincanes: ordinary.

Form.--Short, hooked downward.

Color when young.--Green.

Small prickles:

Quantity.--On main stalks: Few. On laterals: Few.

I claim:
 1. A new and distinct variety of rose plant of the miniatureclass, substantially as herein shown and described, characterizedparticularly as to novelty by the unique combination of its novelstriping and color change in the flower, the presence of glands on thestipules, peduncle, petiole and rachis, its resistance to powdery mildewand rust, its upright but dwarf growth habit and its dark green glossyfoliage.